More broadly, compositionality has proven to be a fruitful field of research; see for example the overview edited by TheOxfordHandbookofCompositionality.
The nlp community has produced models of compositional semantics [1]}, [2]}, [3]} and significant efforts have been made to assess how well they capture human intuitions [4]}, [5]}, [6]}, [7]} and to analyze their behavior [8]}, [9]}.
It is worth stressing that assessing the degree of compositionality within a corpus or a model, as do these works, is a distinct enterprise from quantifying the degree of similarity between two sentences [10]}, [11]}, [12]}—more precisely, the methodology of mfc employs the latter to estimate the former.
